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Title: High-Q fano resonances via direct excitation of an antisymmetric dark mode
Authors: Bochkova, Elena
Han, Song
De Lustrac, André
Singh, Ranjan
Burokur, Shah Nawaz
Lupu, Anatole
Keywords: Science::Physics
Issue Date: 2018
Source: Bochkova, E., Han, S., De Lustrac, A., Singh, R., Burokur, S. N., & Lupu, A. (2018). High-Q fano resonances via direct excitation of an antisymmetric dark mode. Optics Letters, 43(16), 3818-3821. doi:10.1364/OL.43.003818
Journal: Optics letters
Abstract: The engineering of metal-insulator-metal metasurfaces (MSs) displaying sharp spectral features based on Fano-type interference between a symmetric bright mode and an antisymmetric dark mode is reported. The proposed mechanism for direct excitation of antisymmetric mode avoids the necessity of mode hybridization through near-field coupling. Modeling and experimental results bring evidence that such MSs operating in the microwave or terahertz domains provide greater flexibility for Fano resonance engineering and provide strong enhancement of the spectral selectivity factor. It is shown that the occurring Fano resonance interference is related to the broken eigenmode orthogonality in open systems and is independent of hybridization mechanism.
ISSN: 0146-9592
DOI: 10.1364/OL.43.003818
Rights: © 2018 Optical Society of America. All rights reserved. This paper was published in Optics Letters and is made available with permission of Optical Society of America.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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